Seiko Cal. 5645 - 673

The Seiko 5645-673 represents an important milestone in Seiko's 1980 lineup. With its 20mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-7411d4e110e7]

Also known as: Monster, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1980

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